function clearDropdown(d) {		document.getElementById(d).selectedIndex = 0;	}	window.onload = function() {		document.getElementById("text").onclick = function () { if(this.value =='Click Here') { this.value = ''; } };		document.getElementById("text").onkeyup = function () { document.getElementById('preview_text').innerHTML = this.value; };		document.getElementById("usa").onchange = function () { 
			document.getElementById('pd').value = this.options[this.selectedIndex].value; 
			document.body.className = this.options[this.selectedIndex].className; 
			clearDropdown('canada'); 
			clearDropdown('europe'); 
		};		document.getElementById("canada").onchange = function () { 
			document.getElementById('pd').value = this.options[this.selectedIndex].value; 
			document.body.className = this.options[this.selectedIndex].className; 
			clearDropdown('usa'); 
			clearDropdown('europe'); 
		};		document.getElementById("europe").onchange = function () { 
			document.getElementById('pd').value = this.options[this.selectedIndex].value; 
			document.body.className = this.options[this.selectedIndex].className; 
			clearDropdown('canada'); 
			clearDropdown('usa'); 
		};	}