function get_randomCssNum()
{
var ranCssNum= Math.floor(Math.random()*7);
//var ranCssNum= Math.floor(Math.random()*Number of CSS you Have);
return ranCssNum;
}
function getaCss()
{
var whichCss=get_randomCssNum();
var cssName=new Array(7)
// var cssName=new Array(Number of CSS you Have)
cssName[0]="";
cssName[1]="";
cssName[2]="";
cssName[3]="";
cssName[4]="";
cssName[5]="";
cssName[6]="";
//I am using 7 CSS files in this example. you can add or remove ;)
//for Add more CSS just add line like this
//cssName[Next Number]="";
return cssName[whichCss]
}
document.write(getaCss());