function centerVertical(){
	var bodyHeight=document.body.clientHeight;	
	SITE.style.top=bodyHeight<=720?0:(bodyHeight-725)/2;
}
function setImage(image,
				  file){
	image.src=file;
}
function getImage(image){
	return image.src;
}
function preloadButtons(){	
	buttons=new Array(); 
	var file=preloadButtons.arguments;
	for(var i=0;i<file.length;i++){
		buttons[i]=new Image();
		setImage(buttons[i],file[i]);
	}			
}
function setObjectAlpha(object,
					    number){
	if(isNavigator("MSIE"))object.style.filter="alpha(opacity="+number+")";	
	else object.style.opacity=number/100;	
	
}
function isNavigator(string){
	return navigator.userAgent.indexOf(string)>-1;
}
function setObjectBackgroundImage(object,
					  			  file){
	object.style.backgroundImage="url("+file+")";
}
function visibleObject(object,
		       string){
	object.style.visibility=string;
}
function getObjectVisibility(object){
	return object.style.visibility;
}
function setObjectColor(object,
		       		    string){
	object.style.color=string;
}
function postSUB_INDEX(subIndex){
	location=subIndex;
}