// correctly handle PNG transparency in Win IE 5.5 or higher.
document.write("<style>#img2, #img3, #img4	{display:none;}</style>");

if (document.images)
	{
	  pic1= new Image(740,248); 
	  pic1.src="images/how_text_en.gif"; 
	  
	  pic2= new Image(740,303); 
	  pic2.src="images/why_50_en.gif"; 
	
	  pic3= new Image(740,187); 
	  pic3.src="images/more_tips_en.gif"; 

	  pic4= new Image(740,169); 
	  pic4.src="images/more_about_en.gif"; 
	}
	//-->
previousImg = 1;
	
function changeView(pic) {
	if (previousImg!= undefined) {
		MM_findObj('img' + previousImg).style.display = "none";		
	}
	MM_findObj('img' + pic).style.display = "block";		

	previousImg = pic;
}
function MM_findObj(n, d) { //v4.01
	var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
		d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
	if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
	for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
	if(!x && d.getElementById) x=d.getElementById(n); return x;
}