isMac = (navigator.appVersion.indexOf("Mac")!=-1) ? true : false;
NS4 = (document.layers) ? true : false;
IEmac = ((document.all)&&(isMac)) ? true : false;
IE4 = ((document.all)&&(navigator.appVersion.indexOf("MSIE 4.")!=-1)) ? true : false;
IE5 = ((document.all)&&(navigator.appVersion.indexOf("MSIE 5.")!=-1)) ? true : false;
IE6 = ((document.all)&&(navigator.appVersion.indexOf("MSIE 6.")!=-1)) ? true : false;
NS6 = (!document.layers) && (navigator.userAgent.indexOf('Netscape')!=-1)?true:false;
MO = (!document.layers) && (navigator.userAgent.indexOf('Mozilla')!=-1)?true:false;
OP = (!document.layers) && (navigator.userAgent.indexOf('Opera')!=-1)?true:false;

IE5plus = IE5 || IE6;
IEMajor = 0;


function MM_preloadImages(numImg,nomImg) { 
    if (document.preloadArray==null) document.preloadArray = new Array(15);
    with (document) for (j=0; j<numImg; j++) 
	{
		preloadArray[j] = new Image;
		preloadArray[j].src = "imatges/principal/"+nomImg+j+".jpg";

		
	
     }
	layinicial("texte");
}


function layinicial(lay1){
	

	if ( IE5 || IE6)
	{
		var posx;
		var posy;
		posx=document.all.t1210.offsetLeft; 
		posy=document.all.t1210.offsetTop; 
		document.all[lay1].style.left = posx + 15;             
		document.all[lay1].style.top = posy + 75;	          
		document.all[lay1].style.visibility="visible";
	}


	else if(NS6 || MO)
	{
		var elemento;
		elemento = document.getElementById(lay1);
	    	if(screen.height > 600)	
		{
			elemento.style.top = 345 + "px";
			elemento.style.left = 425 + "px";		
		}
		else 
		{
			elemento.style.top = 345 + "px";
			elemento.style.left = 325 + "px";		
		}

		elemento.style.visibility="visible";

	}

	else
	{

 		document.layers[lay1].x=document.images['text'].x+15;
		document.layers[lay1].y=document.images['text'].y+55;
		document.layers[lay1].visibility="show";	
	}

}

function Images (ImgName,Index)
{


}





function Images2 (ImgName,Index)
{

		document.images[ImgName].src=document.preloadArray[Index].src;

}


function Img(ImgName,ImgSrc)
{
   document.images[ImgName].src=ImgSrc;
}


function mostrar_dep(lay,lay1){
	

	if ( IE5 || IE6)
	{
		var posx;
		var posy;
		posx=document.all.t1210.offsetLeft; 
		posy=document.all.t1210.offsetTop; 
		document.all[lay1].style.left = posx + 8;             
		document.all[lay1].style.top = posy + 27;	          
		document.all[lay1].style.visibility="visible";
	}

	else if(NS6 || MO)
	{
		var elemento;
		elemento = document.getElementById(lay1);
	    	if(screen.height > 600)	
		{
			elemento.style.top = 290 + "px";
			elemento.style.left = 415 + "px";		
		}
		else 
		{
			elemento.style.top = 290 + "px";
			elemento.style.left = 305 + "px";		
		}

		elemento.style.visibility="visible";

	}

	else
	{
 		document.layers[lay1].x=document.images['text'].x+8;
		document.layers[lay1].y=document.images['text'].y+6;
		document.layers[lay1].visibility="show";	
	
	}

	mostrar(lay,lay1);
	
}


function mostrar(lay,lay1)
{        
	if ( IE5 || IE6)
	{
		var posx;
		var posy;
		posx=document.all.t1210.offsetLeft; 
		posy=document.all.t1210.offsetTop; 
		document.all[lay].style.left = posx + 15;           
		document.all[lay].style.top = posy + 77;	          
		document.all[lay].style.visibility="visible";
	}
	else if(NS6 || MO)
	{
		var elemento;
		elemento = document.getElementById(lay);
	    	if(screen.height > 600)	
		{
			elemento.style.top = 340 + "px";
			elemento.style.left = 430 + "px";		
		}
		else 
		{
			elemento.style.top = 340 + "px";
			elemento.style.left = 320 + "px";		
		}

		elemento.style.visibility="visible";

	}
	else
	{
		document.layers[lay].y = document.layers[lay1].y+50;
		document.layers[lay].x = document.layers[lay1].x+35;
        	document.layers[lay].visibility="show";
	}
}



function esconder(){

	if(navigator.userAgent.toLowerCase().indexOf("msie") != -1)
	{

		document.all.fonsestu.style.visibility = "hidden";	
		document.all.fonsalu.style.visibility = "hidden";	
		document.all.fonsdep.style.visibility = "hidden";	
		document.all.fonscentre.style.visibility = "hidden";	
		document.all.fonsarea.style.visibility = "hidden";
		document.all.fonsrect.style.visibility = "hidden";
		document.all.fonsinform.style.visibility = "hidden";

		document.all.estu.style.visibility = "hidden";
		document.all.alu.style.visibility = "hidden";
		document.all.depart.style.visibility = "hidden";
		document.all.centre.style.visibility = "hidden";
		document.all.area.style.visibility = "hidden";
		document.all.rectorat.style.visibility= "hidden";
       		document.all.informacio.style.visibility= "hidden";
	}

	else if(NS6 || MO)
	{
		var elemento0;
		var elemento1;
		var elemento2;
		var elemento3;
		var elemento4;
		var elemento5;
		var elemento6;
		var elemento7;
		var elemento8;
		var elemento9;
		var elemento10;
		var elemento11;
		var elemento12;
		var elemento13;

		elemento12 = document.getElementById('fonsestu');
		elemento12.style.visibility="hidden";
		elemento13 = document.getElementById('estu');
		elemento13.style.visibility="hidden";
		elemento10 = document.getElementById('fonsalu');
		elemento10.style.visibility="hidden";
		elemento11 = document.getElementById('alu');
		elemento11.style.visibility="hidden";
		elemento0 = document.getElementById('fonsdep');
		elemento0.style.visibility="hidden";
		elemento1 = document.getElementById('depart');
		elemento1.style.visibility="hidden";
		elemento2 = document.getElementById('fonscentre');
		elemento2.style.visibility="hidden";
		elemento3 = document.getElementById('centre');
		elemento3.style.visibility="hidden";
		elemento4 = document.getElementById('fonsarea');
		elemento4.style.visibility="hidden";
		elemento5 = document.getElementById('area');
		elemento5.style.visibility="hidden";
		elemento6 = document.getElementById('fonsrect');
		elemento6.style.visibility="hidden";
		elemento7 = document.getElementById('rectorat');
		elemento7.style.visibility="hidden";
		elemento8 = document.getElementById('fonsinform');
		elemento8.style.visibility="hidden";
		elemento9 = document.getElementById('informacio');
		elemento9.style.visibility="hidden";

	}

	else
	{
		document.layers["fonsestu"].visibility="hide";	
		document.layers["estu"].visibility="hide";
		document.layers["fonsalu"].visibility="hide";	
		document.layers["alu"].visibility="hide";
		document.layers["fonsdep"].visibility="hide";	
		document.layers["depart"].visibility="hide";
		document.layers["fonscentre"].visibility="hide";	
		document.layers["centre"].visibility="hide";
		document.layers["fonsarea"].visibility="hide";
		document.layers["area"].visibility="hide";
		document.layers["fonsrect"].visibility="hide";
		document.layers["rectorat"].visibility="hide";
		document.layers["fonsinform"].visibility="hide";
		document.layers["informacio"].visibility="hide";


	}

}

function escull(de,win){

	 win.location.href = de.options[de.selectedIndex].value
}