// Vars usades
	sbM = new Array();
	ns4 = (document.layers)? true:false
	ie4 = (document.all)? true:false		
	if (!ie4) document.captureEvents(Event.MOUSEMOVE);
	
	function init() {
		
		initNavegacio();
	}
	
	
	
	
	
	// Aquesta funcio inicialitza les capes per a tots els navegadors
	function initNavegacio(){
		
	if (ns4){
		sbM[0] = document.sup1
		sbM[1] = document.sup2
		sbM[2] = document.sup3
		sbM[3] = document.sup4
			
	}else{
		if(ie4){
			sbM[0] = sup1.style
			sbM[1] = sup2.style
			sbM[2] = sup3.style
			sbM[3] = sup4.style
			
				
		} else {
			d=document.getElementsByTagName("DIV")
			sbM[0] = d[0+2].style
			sbM[1] = d[1+2].style
			sbM[2] = d[2+2].style
			sbM[3] = d[3+2].style
			
			}
		}
		sbM[0].ypos = parseInt(sbM[0].top)		
		sbM[1].ypos = parseInt(sbM[1].top)		
		sbM[2].ypos = parseInt(sbM[2].top)	
		sbM[3].ypos = parseInt(sbM[3].top)
		
	}
	
	function mueveCapa(layer){
		sbM[layer].ypos = 170;
		sbM[layer].top = sbM[layer].ypos;
		if(ie4) alphaon(layer);
	}
	
	
	
	function borraCapa(layer){
		
		sbM[layer].ypos = -270;		
		sbM[layer].top = sbM[layer].ypos;
		if(ie4) {
			clearInterval(provatimer);
			sup1.filters.alpha.opacity = 10;
			sup2.filters.alpha.opacity = 10;
			sup3.filters.alpha.opacity = 10;
			sup4.filters.alpha.opacity = 10;	
		}
	}
	
	function alphaon(layer) {
	 	 x = layer;
	 	 provatimer=setInterval("apareix(x)", 50);}
	 	 
	
	function apareix(x){				
		
		switch(x) {				
			case 0: {
				if(sup1.filters.alpha.opacity < 100){  
						sup1.filters.alpha.opacity += 10;
				} else  clearInterval(provatimer);				
				} break;
			case 1: {
				if(sup2.filters.alpha.opacity < 100){  
						sup2.filters.alpha.opacity += 10;
				} else  clearInterval(provatimer);	
				} break;
			case 2: {
				if(sup3.filters.alpha.opacity < 100){  
						sup3.filters.alpha.opacity += 10;
				} else  clearInterval(provatimer);				
				}break;
			case 3: {
				if(sup4.filters.alpha.opacity < 100){  
						sup4.filters.alpha.opacity += 10;
				} else  clearInterval(provatimer);
				}break;
	 } }